Description
Antiferromagnetic materials constitute an important topic of contemporary condensed matter research and their use encompasses modern spintronics, data storage, etc. Importantly, layered antiferromagnetic copper(II) oxides constitute parent compounds of high-Tc superconductors and superconductivity is achieved via chemical or physical doping to these materials. Oxocuprates(II) feature very strong magnetic superexchange between metal centers with superexchange constants reaching up to ca. 250 meV for one-dimensional Sr2CuO3. Here, we will discuss analogous silver(II) systems with fluoride rather than oxide ligands required for their stability [1]. Fluoroargentates(II) will be shown to exhibit even stronger magnetic superexchange than oxocuprates(II) [2], with experimentally confirmed J values of ca. 300 meV, and a prospect for further increase of this key parameter to beyond 450 meV [3]. Consequences of these findings for a possibility to achieve magnetic-glue-driven room-temperature superconductivity at ambient pressure in two-dimensional systems [4,5] will be discussed in this contribution.
[1] W. Grochala, NATURE MATER 5(7): 513-514 2006
[2] T. Jaron and W. Grochala, PHYS STAT SOL RRL 2(2): 71-73 2008.
[3] K. Kuder and W. Grochala, submitted 2026.
[4] J. Gawraczynski et al., PNAS 116(5): 1495-1500 2019.
[5] A. Grzelak et al., PHYS REV MATER 4(8): 084405 2020.
| I am the presenting author | Yes |
|---|